<?php

// +----------------------------------------------------------------------

// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]

// +----------------------------------------------------------------------

// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.

// +----------------------------------------------------------------------

// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )

// +----------------------------------------------------------------------

// | Author: luofei614 <weibo.com/luofei614>

// +----------------------------------------------------------------------

// $Id$



/**

 * 将Trace信息输出到火狐的firebug，从而不影响ajax效果和页面的布局。

 * 使用前，你需要先在火狐浏览器上安装firebug和firePHP两个插件。

 * 定义应用的tags.php文件， 

 * <code>

 * <?php return array(

 *   'app_end'=>array(

 *       'FireShowPageTrace'

 *   )

 * );

 * </code>

 * 再将此文件放到应用的Behavior文件夹中即可

 * 如果trace信息没有正常输出，请查看您的日志。

 * firePHP，是通过http headers和firebug通讯的，所以要保证在输出trace信息之前不能有

 * headers输出，你可以在入口文件第一行加入代码 ob_start(); 或者配置output_buffering

 *

 */

namespace Behavior;

/**

 * 系统行为扩展 页面Trace显示输出

 */

class FireShowPageTraceBehavior {

    protected $tracePagTabs =   array('BASE'=>'基本','FILE'=>'文件','INFO'=>'流程','ERR|NOTIC'=>'错误','SQL'=>'SQL','DEBUG'=>'调试');



    // 行为扩展的执行入口必须是run

    public function run(&$params){

        if(C('FIRE_SHOW_PAGE_TRACE',null,true)) $this->showTrace();

    }



    /**

     * 显示页面Trace信息

     * @access private

     */

    private function showTrace() {

         // 系统默认显示信息

        $files =  get_included_files();

        $info   =   array();

        foreach ($files as $key=>$file){

            $info[] = $file.' ( '.number_format(filesize($file)/1024,2).' KB )';

        }

        $trace  =   array();

        $base   =   array(

            '请求信息'=>  date('Y-m-d H:i:s',$_SERVER['REQUEST_TIME']).' '.$_SERVER['SERVER_PROTOCOL'].' '.$_SERVER['REQUEST_METHOD'].' : '.__SELF__,

            '运行时间'=> $this->showTime(),

            '内存开销'=> MEMORY_LIMIT_ON?number_format((memory_get_usage() - $GLOBALS['_startUseMems'])/1024,2).' kb':'不支持',

            '查询信息'=> N('db_query').' queries '.N('db_write').' writes ',

            '文件加载'=> count(get_included_files()),

            '缓存信息'=> N('cache_read').' gets '.N('cache_write').' writes ',

            '配置加载'=> count(c()),

            '会话信息'=> 'SESSION_ID='.session_id(),

            );

        // 读取应用定义的Trace文件

        $traceFile  =   CONF_PATH.'trace.php';

        if(is_file($traceFile)) {

            $base    =   array_merge($base,include $traceFile);

        }

        $debug  =   trace();

        $tabs   =   C('TRACE_PAGE_TABS',null,$this->tracePagTabs);

        foreach ($tabs as $name=>$title){

            switch(strtoupper($name)) {

                case 'BASE':// 基本信息

                    $trace[$title]  =   $base;

                    break;

                case 'FILE': // 文件信息

                    $trace[$title]  =   $info;

                    break;

                default:// 调试信息

                    if(strpos($name,'|')) {// 多组信息

                        $array  =   explode('|',$name);

                        $result =   array();

                        foreach($array as $name){

                            $result   +=   isset($debug[$name])?$debug[$name]:array();

                        }

                        $trace[$title]  =   $result;

                    }else{

                        $trace[$title]  =   isset($debug[$name])?$debug[$name]:'';

                    }

            }

        }

    foreach ($trace as $key=>$val){

            if(!is_array($val) && empty($val))

                $val=array();

            if(is_array($val)){

            $fire=array(

            array('','')

            );

            foreach($val as $k=>$v){

                $fire[]=array($k,$v);

            }

            fb(array($key,$fire),FirePHP::TABLE);

        }else{

            fb($val,$key);

        }

     }

    unset($files,$info,$log,$base);

    }



    /**

     * 获取运行时间

     */

    private function showTime() {

        // 显示运行时间

        G('beginTime',$GLOBALS['_beginTime']);

        G('viewEndTime');

        // 显示详细运行时间

        return G('beginTime','viewEndTime').'s ( Load:'.G('beginTime','loadTime').'s Init:'.G('loadTime','initTime').'s Exec:'.G('initTime','viewStartTime').'s Template:'.G('viewStartTime','viewEndTime').'s )';

    }



}





function fb()

{

    $instance = FirePHP::getInstance(true);

  

    $args = func_get_args();

    return call_user_func_array(array($instance,'fb'),$args);

}





class FB

{

    /**

     * Enable and disable logging to Firebug

     * 

     * @see FirePHP->setEnabled()

     * @param boolean $Enabled TRUE to enable, FALSE to disable

     * @return void

     */

    public static function setEnabled($Enabled)

    {

        $instance = FirePHP::getInstance(true);

        $instance->setEnabled($Enabled);

    }

  

    /**

     * Check if logging is enabled

     * 

     * @see FirePHP->getEnabled()

     * @return boolean TRUE if enabled

     */

    public static function getEnabled()

    {

        $instance = FirePHP::getInstance(true);

        return $instance->getEnabled();

    }  

  

    /**

     * Specify a filter to be used when encoding an object

     * 

     * Filters are used to exclude object members.

     * 

     * @see FirePHP->setObjectFilter()

     * @param string $Class The class name of the object

     * @param array $Filter An array or members to exclude

     * @return void

     */

    public static function setObjectFilter($Class, $Filter)

    {

      $instance = FirePHP::getInstance(true);

      $instance->setObjectFilter($Class, $Filter);

    }

  

    /**

     * Set some options for the library

     * 

     * @see FirePHP->setOptions()

     * @param array $Options The options to be set

     * @return void

     */

    public static function setOptions($Options)

    {

        $instance = FirePHP::getInstance(true);

        $instance->setOptions($Options);

    }



    /**

     * Get options for the library

     * 

     * @see FirePHP->getOptions()

     * @return array The options

     */

    public static function getOptions()

    {

        $instance = FirePHP::getInstance(true);

        return $instance->getOptions();

    }



    /**

     * Log object to firebug

     * 

     * @see http://www.firephp.org/Wiki/Reference/Fb

     * @param mixed $Object

     * @return true

     * @throws Exception

     */

    public static function send()

    {

        $instance = FirePHP::getInstance(true);

        $args = func_get_args();

        return call_user_func_array(array($instance,'fb'),$args);

    }



    /**

     * Start a group for following messages

     * 

     * Options:

     *   Collapsed: [true|false]

     *   Color:     [#RRGGBB|ColorName]

     *

     * @param string $Name

     * @param array $Options OPTIONAL Instructions on how to log the group

     * @return true

     */

    public static function group($Name, $Options=null)

    {

        $instance = FirePHP::getInstance(true);

        return $instance->group($Name, $Options);

    }



    /**

     * Ends a group you have started before

     *

     * @return true

     * @throws Exception

     */

    public static function groupEnd()

    {

        return self::send(null, null, FirePHP::GROUP_END);

    }



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::LOG

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public static function log($Object, $Label=null)

    {

        return self::send($Object, $Label, FirePHP::LOG);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::INFO

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public static function info($Object, $Label=null)

    {

        return self::send($Object, $Label, FirePHP::INFO);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::WARN

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public static function warn($Object, $Label=null)

    {

        return self::send($Object, $Label, FirePHP::WARN);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::ERROR

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public static function error($Object, $Label=null)

    {

        return self::send($Object, $Label, FirePHP::ERROR);

    } 



    /**

     * Dumps key and variable to firebug server panel

     *

     * @see FirePHP::DUMP

     * @param string $Key

     * @param mixed $Variable

     * @return true

     * @throws Exception

     */

    public static function dump($Key, $Variable)

    {

        return self::send($Variable, $Key, FirePHP::DUMP);

    } 



    /**

     * Log a trace in the firebug console

     *

     * @see FirePHP::TRACE

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public static function trace($Label)

    {

        return self::send($Label, FirePHP::TRACE);

    } 



    /**

     * Log a table in the firebug console

     *

     * @see FirePHP::TABLE

     * @param string $Label

     * @param string $Table

     * @return true

     * @throws Exception

     */

    public static function table($Label, $Table)

    {

        return self::send($Table, $Label, FirePHP::TABLE);

    } 



}



if (!defined('E_STRICT')) {

    define('E_STRICT', 2048);

}

if (!defined('E_RECOVERABLE_ERROR')) {

    define('E_RECOVERABLE_ERROR', 4096);

}

if (!defined('E_DEPRECATED')) {

    define('E_DEPRECATED', 8192);

}

if (!defined('E_USER_DEPRECATED')) {

    define('E_USER_DEPRECATED', 16384);

} 

 

/**

 * Sends the given data to the FirePHP Firefox Extension.

 * The data can be displayed in the Firebug Console or in the

 * "Server" request tab.

 * 

 * For more information see: http://www.firephp.org/

 * 

 * @copyright       Copyright (C) 2007-2009 Christoph Dorn

 * @author          Christoph Dorn <christoph@christophdorn.com>

 * @license         http://www.opensource.org/licenses/bsd-license.php

 * @package         FirePHPCore

 */

class FirePHP {



    /**

     * FirePHP version

     *

     * @var string

     */

    const VERSION = '0.3';    // @pinf replace '0.3' with '%%package.version%%'



    /**

     * Firebug LOG level

     *

     * Logs a message to firebug console.

     * 

     * @var string

     */

    const LOG = 'LOG';

  

    /**

     * Firebug INFO level

     *

     * Logs a message to firebug console and displays an info icon before the message.

     * 

     * @var string

     */

    const INFO = 'INFO';

    

    /**

     * Firebug WARN level

     *

     * Logs a message to firebug console, displays an warning icon before the message and colors the line turquoise.

     * 

     * @var string

     */

    const WARN = 'WARN';

    

    /**

     * Firebug ERROR level

     *

     * Logs a message to firebug console, displays an error icon before the message and colors the line yellow. Also increments the firebug error count.

     * 

     * @var string

     */

    const ERROR = 'ERROR';

    

    /**

     * Dumps a variable to firebug's server panel

     *

     * @var string

     */

    const DUMP = 'DUMP';

    

    /**

     * Displays a stack trace in firebug console

     *

     * @var string

     */

    const TRACE = 'TRACE';

    

    /**

     * Displays an exception in firebug console

     * 

     * Increments the firebug error count.

     *

     * @var string

     */

    const EXCEPTION = 'EXCEPTION';

    

    /**

     * Displays an table in firebug console

     *

     * @var string

     */

    const TABLE = 'TABLE';

    

    /**

     * Starts a group in firebug console

     * 

     * @var string

     */

    const GROUP_START = 'GROUP_START';

    

    /**

     * Ends a group in firebug console

     * 

     * @var string

     */

    const GROUP_END = 'GROUP_END';

    

    /**

     * Singleton instance of FirePHP

     *

     * @var FirePHP

     */

    protected static $instance = null;

    

    /**

     * Flag whether we are logging from within the exception handler

     * 

     * @var boolean

     */

    protected $inExceptionHandler = false;

    

    /**

     * Flag whether to throw PHP errors that have been converted to ErrorExceptions

     * 

     * @var boolean

     */

    protected $throwErrorExceptions = true;

    

    /**

     * Flag whether to convert PHP assertion errors to Exceptions

     * 

     * @var boolean

     */

    protected $convertAssertionErrorsToExceptions = true;

    

    /**

     * Flag whether to throw PHP assertion errors that have been converted to Exceptions

     * 

     * @var boolean

     */

    protected $throwAssertionExceptions = false;



    /**

     * Wildfire protocol message index

     *

     * @var int

     */

    protected $messageIndex = 1;

    

    /**

     * Options for the library

     * 

     * @var array

     */

    protected $options = array('maxDepth' => 10,

                               'maxObjectDepth' => 5,

                               'maxArrayDepth' => 5,

                               'useNativeJsonEncode' => true,

                               'includeLineNumbers' => true);



    /**

     * Filters used to exclude object members when encoding

     * 

     * @var array

     */

    protected $objectFilters = array(

        'firephp' => array('objectStack', 'instance', 'json_objectStack'),

        'firephp_test_class' => array('objectStack', 'instance', 'json_objectStack')

    );



    /**

     * A stack of objects used to detect recursion during object encoding

     * 

     * @var object

     */

    protected $objectStack = array();



    /**

     * Flag to enable/disable logging

     * 

     * @var boolean

     */

    protected $enabled = true;



    /**

     * The insight console to log to if applicable

     * 

     * @var object

     */

    protected $logToInsightConsole = null;



    /**

     * When the object gets serialized only include specific object members.

     * 

     * @return array

     */  

    public function __sleep()

    {

        return array('options','objectFilters','enabled');

    }

    

    /**

     * Gets singleton instance of FirePHP

     *

     * @param boolean $AutoCreate

     * @return FirePHP

     */

    public static function getInstance($AutoCreate = false)

    {

        if ($AutoCreate===true && !self::$instance) {

            self::init();

        }

        return self::$instance;

    }

    

    /**

     * Creates FirePHP object and stores it for singleton access

     *

     * @return FirePHP

     */

    public static function init()

    {

        return self::setInstance(new self());

    }



    /**

     * Set the instance of the FirePHP singleton

     * 

     * @param FirePHP $instance The FirePHP object instance

     * @return FirePHP

     */

    public static function setInstance($instance)

    {

        return self::$instance = $instance;

    }



    /**

     * Set an Insight console to direct all logging calls to

     * 

     * @param object $console The console object to log to

     * @return void

     */

    public function setLogToInsightConsole($console)

    {

        if(is_string($console)) {

            if(get_class($this)!='FirePHP_Insight' && !is_subclass_of($this, 'FirePHP_Insight')) {

                throw new Exception('FirePHP instance not an instance or subclass of FirePHP_Insight!');

            }

            $this->logToInsightConsole = $this->to('request')->console($console);

        } else {

            $this->logToInsightConsole = $console;

        }

    }



    /**

     * Enable and disable logging to Firebug

     * 

     * @param boolean $Enabled TRUE to enable, FALSE to disable

     * @return void

     */

    public function setEnabled($Enabled)

    {

       $this->enabled = $Enabled;

    }

    

    /**

     * Check if logging is enabled

     * 

     * @return boolean TRUE if enabled

     */

    public function getEnabled()

    {

        return $this->enabled;

    }

    

    /**

     * Specify a filter to be used when encoding an object

     * 

     * Filters are used to exclude object members.

     * 

     * @param string $Class The class name of the object

     * @param array $Filter An array of members to exclude

     * @return void

     */

    public function setObjectFilter($Class, $Filter)

    {

        $this->objectFilters[strtolower($Class)] = $Filter;

    }

  

    /**

     * Set some options for the library

     * 

     * Options:

     *  - maxDepth: The maximum depth to traverse (default: 10)

     *  - maxObjectDepth: The maximum depth to traverse objects (default: 5)

     *  - maxArrayDepth: The maximum depth to traverse arrays (default: 5)

     *  - useNativeJsonEncode: If true will use json_encode() (default: true)

     *  - includeLineNumbers: If true will include line numbers and filenames (default: true)

     * 

     * @param array $Options The options to be set

     * @return void

     */

    public function setOptions($Options)

    {

        $this->options = array_merge($this->options,$Options);

    }



    /**

     * Get options from the library

     *

     * @return array The currently set options

     */

    public function getOptions()

    {

        return $this->options;

    }



    /**

     * Set an option for the library

     * 

     * @param string $Name

     * @param mixed $Value

     * @throws Exception

     * @return void

     */  

    public function setOption($Name, $Value)

    {

        if (!isset($this->options[$Name])) {

            throw $this->newException('Unknown option: ' . $Name);

        }

        $this->options[$Name] = $Value;

    }



    /**

     * Get an option from the library

     *

     * @param string $Name

     * @throws Exception

     * @return mixed

     */

    public function getOption($Name)

    {

        if (!isset($this->options[$Name])) {

            throw $this->newException('Unknown option: ' . $Name);

        }

        return $this->options[$Name];

    }



    /**

     * Register FirePHP as your error handler

     * 

     * Will throw exceptions for each php error.

     * 

     * @return mixed Returns a string containing the previously defined error handler (if any)

     */

    public function registerErrorHandler($throwErrorExceptions = false)

    {

        //NOTE: The following errors will not be caught by this error handler:

        //      E_ERROR, E_PARSE, E_CORE_ERROR,

        //      E_CORE_WARNING, E_COMPILE_ERROR,

        //      E_COMPILE_WARNING, E_STRICT

    

        $this->throwErrorExceptions = $throwErrorExceptions;

    

        return set_error_handler(array($this,'errorHandler'));     

    }



    /**

     * FirePHP's error handler

     * 

     * Throws exception for each php error that will occur.

     *

     * @param int $errno

     * @param string $errstr

     * @param string $errfile

     * @param int $errline

     * @param array $errcontext

     */

    public function errorHandler($errno, $errstr, $errfile, $errline, $errcontext)

    {

        // Don't throw exception if error reporting is switched off

        if (error_reporting() == 0) {

            return;

        }

        // Only throw exceptions for errors we are asking for

        if (error_reporting() & $errno) {



            $exception = new ErrorException($errstr, 0, $errno, $errfile, $errline);

            if ($this->throwErrorExceptions) {

                throw $exception;

            } else {

                $this->fb($exception);

            }

        }

    }

  

    /**

     * Register FirePHP as your exception handler

     * 

     * @return mixed Returns the name of the previously defined exception handler,

     *               or NULL on error.

     *               If no previous handler was defined, NULL is also returned.

     */

    public function registerExceptionHandler()

    {

        return set_exception_handler(array($this,'exceptionHandler'));     

    }

  

    /**

     * FirePHP's exception handler

     * 

     * Logs all exceptions to your firebug console and then stops the script.

     *

     * @param Exception $Exception

     * @throws Exception

     */

    function exceptionHandler($Exception)

    {

    

        $this->inExceptionHandler = true;

    

        header('HTTP/1.1 500 Internal Server Error');

    

        try {

            $this->fb($Exception);

        } catch (Exception $e) {

            echo 'We had an exception: ' . $e;

        }

        $this->inExceptionHandler = false;

    }

  

    /**

     * Register FirePHP driver as your assert callback

     * 

     * @param boolean $convertAssertionErrorsToExceptions

     * @param boolean $throwAssertionExceptions

     * @return mixed Returns the original setting or FALSE on errors

     */

    public function registerAssertionHandler($convertAssertionErrorsToExceptions = true, $throwAssertionExceptions = false)

    {

        $this->convertAssertionErrorsToExceptions = $convertAssertionErrorsToExceptions;

        $this->throwAssertionExceptions = $throwAssertionExceptions;

        

        if ($throwAssertionExceptions && !$convertAssertionErrorsToExceptions) {

            throw $this->newException('Cannot throw assertion exceptions as assertion errors are not being converted to exceptions!');

        }

        

        return assert_options(ASSERT_CALLBACK, array($this, 'assertionHandler'));

    }

  

    /**

     * FirePHP's assertion handler

     *

     * Logs all assertions to your firebug console and then stops the script.

     *

     * @param string $file File source of assertion

     * @param int    $line Line source of assertion

     * @param mixed  $code Assertion code

     */

    public function assertionHandler($file, $line, $code)

    {

        if ($this->convertAssertionErrorsToExceptions) {

          

          $exception = new ErrorException('Assertion Failed - Code[ '.$code.' ]', 0, null, $file, $line);

    

          if ($this->throwAssertionExceptions) {

              throw $exception;

          } else {

              $this->fb($exception);

          }

        

        } else {

            $this->fb($code, 'Assertion Failed', FirePHP::ERROR, array('File'=>$file,'Line'=>$line));

        }

    }

  

    /**

     * Start a group for following messages.

     * 

     * Options:

     *   Collapsed: [true|false]

     *   Color:     [#RRGGBB|ColorName]

     *

     * @param string $Name

     * @param array $Options OPTIONAL Instructions on how to log the group

     * @return true

     * @throws Exception

     */

    public function group($Name, $Options = null)

    {

    

        if (!$Name) {

            throw $this->newException('You must specify a label for the group!');

        }

        

        if ($Options) {

            if (!is_array($Options)) {

                throw $this->newException('Options must be defined as an array!');

            }

            if (array_key_exists('Collapsed', $Options)) {

                $Options['Collapsed'] = ($Options['Collapsed'])?'true':'false';

            }

        }

        

        return $this->fb(null, $Name, FirePHP::GROUP_START, $Options);

    }

  

    /**

     * Ends a group you have started before

     *

     * @return true

     * @throws Exception

     */

    public function groupEnd()

    {

        return $this->fb(null, null, FirePHP::GROUP_END);

    }



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::LOG

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public function log($Object, $Label = null, $Options = array())

    {

        return $this->fb($Object, $Label, FirePHP::LOG, $Options);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::INFO

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public function info($Object, $Label = null, $Options = array())

    {

        return $this->fb($Object, $Label, FirePHP::INFO, $Options);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::WARN

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public function warn($Object, $Label = null, $Options = array())

    {

        return $this->fb($Object, $Label, FirePHP::WARN, $Options);

    } 



    /**

     * Log object with label to firebug console

     *

     * @see FirePHP::ERROR

     * @param mixes $Object

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public function error($Object, $Label = null, $Options = array())

    {

        return $this->fb($Object, $Label, FirePHP::ERROR, $Options);

    } 



    /**

     * Dumps key and variable to firebug server panel

     *

     * @see FirePHP::DUMP

     * @param string $Key

     * @param mixed $Variable

     * @return true

     * @throws Exception

     */

    public function dump($Key, $Variable, $Options = array())

    {

        if (!is_string($Key)) {

            throw $this->newException('Key passed to dump() is not a string');

        }

        if (strlen($Key)>100) {

            throw $this->newException('Key passed to dump() is longer than 100 characters');

        }

        if (!preg_match_all('/^[a-zA-Z0-9-_\.:]*$/', $Key, $m)) {

            throw $this->newException('Key passed to dump() contains invalid characters [a-zA-Z0-9-_\.:]');

        }

        return $this->fb($Variable, $Key, FirePHP::DUMP, $Options);

    }

  

    /**

     * Log a trace in the firebug console

     *

     * @see FirePHP::TRACE

     * @param string $Label

     * @return true

     * @throws Exception

     */

    public function trace($Label)

    {

        return $this->fb($Label, FirePHP::TRACE);

    } 



    /**

     * Log a table in the firebug console

     *

     * @see FirePHP::TABLE

     * @param string $Label

     * @param string $Table

     * @return true

     * @throws Exception

     */

    public function table($Label, $Table, $Options = array())

    {

        return $this->fb($Table, $Label, FirePHP::TABLE, $Options);

    }



    /**

     * Insight API wrapper

     * 

     * @see Insight_Helper::to()

     */

    public static function to()

    {

        $instance = self::getInstance();

        if (!method_exists($instance, "_to")) {

            throw new Exception("FirePHP::to() implementation not loaded");

        }

        $args = func_get_args();

        return call_user_func_array(array($instance, '_to'), $args);

    }



    /**

     * Insight API wrapper

     * 

     * @see Insight_Helper::plugin()

     */

    public static function plugin()

    {

        $instance = self::getInstance();

        if (!method_exists($instance, "_plugin")) {

            throw new Exception("FirePHP::plugin() implementation not loaded");

        }

        $args = func_get_args();

        return call_user_func_array(array($instance, '_plugin'), $args);

    }



    /**

     * Check if FirePHP is installed on client

     *

     * @return boolean

     */

    public function detectClientExtension()

    {

        // Check if FirePHP is installed on client via User-Agent header

        if (@preg_match_all('/\sFirePHP\/([\.\d]*)\s?/si',$this->getUserAgent(),$m) &&

           version_compare($m[1][0],'0.0.6','>=')) {

            return true;

        } else

        // Check if FirePHP is installed on client via X-FirePHP-Version header

        if (@preg_match_all('/^([\.\d]*)$/si',$this->getRequestHeader("X-FirePHP-Version"),$m) &&

           version_compare($m[1][0],'0.0.6','>=')) {

            return true;

        }

        return false;

    }

 

    /**

     * Log varible to Firebug

     * 

     * @see http://www.firephp.org/Wiki/Reference/Fb

     * @param mixed $Object The variable to be logged

     * @return true Return TRUE if message was added to headers, FALSE otherwise

     * @throws Exception

     */

    public function fb($Object)

    {

        if($this instanceof FirePHP_Insight && method_exists($this, '_logUpgradeClientMessage')) {

            if(!FirePHP_Insight::$upgradeClientMessageLogged) {    // avoid infinite recursion as _logUpgradeClientMessage() logs a message

                $this->_logUpgradeClientMessage();

            }

        }



        static $insightGroupStack = array();



        if (!$this->getEnabled()) {

            return false;

        }



        if ($this->headersSent($filename, $linenum)) {

            // If we are logging from within the exception handler we cannot throw another exception

            if ($this->inExceptionHandler) {

                // Simply echo the error out to the page

                echo '<div style="border: 2px solid red; font-family: Arial; font-size: 12px; background-color: lightgray; padding: 5px;"><span style="color: red; font-weight: bold;">FirePHP ERROR:</span> Headers already sent in <b>'.$filename.'</b> on line <b>'.$linenum.'</b>. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.</div>';

            } else {

                throw $this->newException('Headers already sent in '.$filename.' on line '.$linenum.'. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.');

            }

        }

      

        $Type = null;

        $Label = null;

        $Options = array();

      

        if (func_num_args()==1) {

        } else

        if (func_num_args()==2) {

            switch(func_get_arg(1)) {

                case self::LOG:

                case self::INFO:

                case self::WARN:

                case self::ERROR:

                case self::DUMP:

                case self::TRACE:

                case self::EXCEPTION:

                case self::TABLE:

                case self::GROUP_START:

                case self::GROUP_END:

                    $Type = func_get_arg(1);

                    break;

                default:

                    $Label = func_get_arg(1);

                    break;

            }

        } else

        if (func_num_args()==3) {

            $Type = func_get_arg(2);

            $Label = func_get_arg(1);

        } else

        if (func_num_args()==4) {

            $Type = func_get_arg(2);

            $Label = func_get_arg(1);

            $Options = func_get_arg(3);

        } else {

            throw $this->newException('Wrong number of arguments to fb() function!');

        }



        if($this->logToInsightConsole!==null && (get_class($this)=='FirePHP_Insight' || is_subclass_of($this, 'FirePHP_Insight'))) {

            $msg = $this->logToInsightConsole;

            if ($Object instanceof Exception) {

                $Type = self::EXCEPTION;

            }

            if($Label && $Type!=self::TABLE && $Type!=self::GROUP_START) {

                $msg = $msg->label($Label);

            }

            switch($Type) {

                case self::DUMP:

                case self::LOG:

                    return $msg->log($Object);

                case self::INFO:

                    return $msg->info($Object);

                case self::WARN:

                    return $msg->warn($Object);

                case self::ERROR:

                    return $msg->error($Object);

                case self::TRACE:

                    return $msg->trace($Object);

                case self::EXCEPTION:

                    return $this->plugin('engine')->handleException($Object, $msg);

                case self::TABLE:

                    if (isset($Object[0]) && !is_string($Object[0]) && $Label) {

                        $Object = array($Label, $Object);

                    }

                    return $msg->table($Object[0], array_slice($Object[1],1), $Object[1][0]);

                case self::GROUP_START:

                    $insightGroupStack[] = $msg->group(md5($Label))->open();

                    return $msg->log($Label);

                case self::GROUP_END:

                    if(count($insightGroupStack)==0) {

                        throw new Error('Too many groupEnd() as opposed to group() calls!');

                    }

                    $group = array_pop($insightGroupStack);

                    return $group->close();

                default:

                    return $msg->log($Object);

            }

        }



        if (!$this->detectClientExtension()) {

            return false;

        }

      

        $meta = array();

        $skipFinalObjectEncode = false;

      

        if ($Object instanceof Exception) {

    

            $meta['file'] = $this->_escapeTraceFile($Object->getFile());

            $meta['line'] = $Object->getLine();

          

            $trace = $Object->getTrace();

            if ($Object instanceof ErrorException

               && isset($trace[0]['function'])

               && $trace[0]['function']=='errorHandler'

               && isset($trace[0]['class'])

               && $trace[0]['class']=='FirePHP') {

               

                $severity = false;

                switch($Object->getSeverity()) {

                    case E_WARNING: $severity = 'E_WARNING'; break;

                    case E_NOTICE: $severity = 'E_NOTICE'; break;

                    case E_USER_ERROR: $severity = 'E_USER_ERROR'; break;

                    case E_USER_WARNING: $severity = 'E_USER_WARNING'; break;

                    case E_USER_NOTICE: $severity = 'E_USER_NOTICE'; break;

                    case E_STRICT: $severity = 'E_STRICT'; break;

                    case E_RECOVERABLE_ERROR: $severity = 'E_RECOVERABLE_ERROR'; break;

                    case E_DEPRECATED: $severity = 'E_DEPRECATED'; break;

                    case E_USER_DEPRECATED: $severity = 'E_USER_DEPRECATED'; break;

                }

                   

                $Object = array('Class'=>get_class($Object),

                                'Message'=>$severity.': '.$Object->getMessage(),

                                'File'=>$this->_escapeTraceFile($Object->getFile()),

                                'Line'=>$Object->getLine(),

                                'Type'=>'trigger',

                                'Trace'=>$this->_escapeTrace(array_splice($trace,2)));

                $skipFinalObjectEncode = true;

            } else {

                $Object = array('Class'=>get_class($Object),

                                'Message'=>$Object->getMessage(),

                                'File'=>$this->_escapeTraceFile($Object->getFile()),

                                'Line'=>$Object->getLine(),

                                'Type'=>'throw',

                                'Trace'=>$this->_escapeTrace($trace));

                $skipFinalObjectEncode = true;

            }

            $Type = self::EXCEPTION;

          

        } else

        if ($Type==self::TRACE) {

          

            $trace = debug_backtrace();

            if (!$trace) return false;

            for( $i=0 ; $i<sizeof($trace) ; $i++ ) {

    

                if (isset($trace[$i]['class'])

                   && isset($trace[$i]['file'])

                   && ($trace[$i]['class']=='FirePHP'

                       || $trace[$i]['class']=='FB')

                   && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'

                       || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {

                    /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */

                } else

                if (isset($trace[$i]['class'])

                   && isset($trace[$i+1]['file'])

                   && $trace[$i]['class']=='FirePHP'

                   && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {

                    /* Skip fb() */

                } else

                if ($trace[$i]['function']=='fb'

                   || $trace[$i]['function']=='trace'

                   || $trace[$i]['function']=='send') {



                    $Object = array('Class'=>isset($trace[$i]['class'])?$trace[$i]['class']:'',

                                    'Type'=>isset($trace[$i]['type'])?$trace[$i]['type']:'',

                                    'Function'=>isset($trace[$i]['function'])?$trace[$i]['function']:'',

                                    'Message'=>$trace[$i]['args'][0],

                                    'File'=>isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'',

                                    'Line'=>isset($trace[$i]['line'])?$trace[$i]['line']:'',

                                    'Args'=>isset($trace[$i]['args'])?$this->encodeObject($trace[$i]['args']):'',

                                    'Trace'=>$this->_escapeTrace(array_splice($trace,$i+1)));

        

                    $skipFinalObjectEncode = true;

                    $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';

                    $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';

                    break;

                }

            }

    

        } else

        if ($Type==self::TABLE) {

          

            if (isset($Object[0]) && is_string($Object[0])) {

                $Object[1] = $this->encodeTable($Object[1]);

            } else {

                $Object = $this->encodeTable($Object);

            }

    

            $skipFinalObjectEncode = true;

          

        } else

        if ($Type==self::GROUP_START) {

          

            if (!$Label) {

                throw $this->newException('You must specify a label for the group!');

            }

          

        } else {

            if ($Type===null) {

                $Type = self::LOG;

            }

        }

        

        if ($this->options['includeLineNumbers']) {

            if (!isset($meta['file']) || !isset($meta['line'])) {

    

                $trace = debug_backtrace();

                for( $i=0 ; $trace && $i<sizeof($trace) ; $i++ ) {

          

                    if (isset($trace[$i]['class'])

                       && isset($trace[$i]['file'])

                       && ($trace[$i]['class']=='FirePHP'

                           || $trace[$i]['class']=='FB')

                       && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'

                           || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {

                        /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */

                    } else

                    if (isset($trace[$i]['class'])

                       && isset($trace[$i+1]['file'])

                       && $trace[$i]['class']=='FirePHP'

                       && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {

                        /* Skip fb() */

                    } else

                    if (isset($trace[$i]['file'])

                       && substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php') {

                        /* Skip FB::fb() */

                    } else {

                        $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';

                        $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';

                        break;

                    }

                }      

            }

        } else {

            unset($meta['file']);

            unset($meta['line']);

        }



        $this->setHeader('X-Wf-Protocol-1','http://meta.wildfirehq.org/Protocol/JsonStream/0.2');

        $this->setHeader('X-Wf-1-Plugin-1','http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/'.self::VERSION);

     

        $structure_index = 1;

        if ($Type==self::DUMP) {

            $structure_index = 2;

            $this->setHeader('X-Wf-1-Structure-2','http://meta.firephp.org/Wildfire/Structure/FirePHP/Dump/0.1');

        } else {

            $this->setHeader('X-Wf-1-Structure-1','http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');

        }

      

        if ($Type==self::DUMP) {

            $msg = '{"'.$Label.'":'.$this->jsonEncode($Object, $skipFinalObjectEncode).'}';

        } else {

            $msg_meta = $Options;

            $msg_meta['Type'] = $Type;

            if ($Label!==null) {

                $msg_meta['Label'] = $Label;

            }

            if (isset($meta['file']) && !isset($msg_meta['File'])) {

                $msg_meta['File'] = $meta['file'];

            }

            if (isset($meta['line']) && !isset($msg_meta['Line'])) {

                $msg_meta['Line'] = $meta['line'];

            }

            $msg = '['.$this->jsonEncode($msg_meta).','.$this->jsonEncode($Object, $skipFinalObjectEncode).']';

        }

        

        $parts = explode("\n",chunk_split($msg, 5000, "\n"));

    

        for( $i=0 ; $i<count($parts) ; $i++) {

            

            $part = $parts[$i];

            if ($part) {

                

                if (count($parts)>2) {

                    // Message needs to be split into multiple parts

                    $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,

                                     (($i==0)?strlen($msg):'')

                                     . '|' . $part . '|'

                                     . (($i<count($parts)-2)?'\\':''));

                } else {

                    $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,

                                     strlen($part) . '|' . $part . '|');

                }

                

                $this->messageIndex++;

                

                if ($this->messageIndex > 99999) {

                    throw $this->newException('Maximum number (99,999) of messages reached!');             

                }

            }

        }

    

        $this->setHeader('X-Wf-1-Index',$this->messageIndex-1);

    

        return true;

    }

  

    /**

     * Standardizes path for windows systems.

     *

     * @param string $Path

     * @return string

     */

    protected function _standardizePath($Path)

    {

        return preg_replace('/\\\\+/','/',$Path);    

    }

  

    /**

     * Escape trace path for windows systems

     *

     * @param array $Trace

     * @return array

     */

    protected function _escapeTrace($Trace)

    {

        if (!$Trace) return $Trace;

        for( $i=0 ; $i<sizeof($Trace) ; $i++ ) {

            if (isset($Trace[$i]['file'])) {

                $Trace[$i]['file'] = $this->_escapeTraceFile($Trace[$i]['file']);

            }

            if (isset($Trace[$i]['args'])) {

                $Trace[$i]['args'] = $this->encodeObject($Trace[$i]['args']);

            }

        }

        return $Trace;    

    }

  

    /**

     * Escape file information of trace for windows systems

     *

     * @param string $File

     * @return string

     */

    protected function _escapeTraceFile($File)

    {

        /* Check if we have a windows filepath */

        if (strpos($File,'\\')) {

            /* First strip down to single \ */

          

            $file = preg_replace('/\\\\+/','\\',$File);

          

            return $file;

        }

        return $File;

    }



    /**

     * Check if headers have already been sent

     *

     * @param string $Filename

     * @param integer $Linenum

     */

    protected function headersSent(&$Filename, &$Linenum)

    {

        return headers_sent($Filename, $Linenum);

    }



    /**

     * Send header

     *

     * @param string $Name

     * @param string $Value

     */

    protected function setHeader($Name, $Value)

    {

        return header($Name.': '.$Value);

    }



    /**

     * Get user agent

     *

     * @return string|false

     */

    protected function getUserAgent()

    {

        if (!isset($_SERVER['HTTP_USER_AGENT'])) return false;

        return $_SERVER['HTTP_USER_AGENT'];

    }



    /**

     * Get all request headers

     * 

     * @return array

     */

    public static function getAllRequestHeaders() {

        static $_cached_headers = false;

        if($_cached_headers!==false) {

            return $_cached_headers;

        }

        $headers = array();

        if(function_exists('getallheaders')) {

            foreach( getallheaders() as $name => $value ) {

                $headers[strtolower($name)] = $value;

            }

        } else {

            foreach($_SERVER as $name => $value) {

                if(substr($name, 0, 5) == 'HTTP_') {

                    $headers[strtolower(str_replace(' ', '-', str_replace('_', ' ', substr($name, 5))))] = $value;

                }

            }

        }

        return $_cached_headers = $headers;

    }



    /**

     * Get a request header

     *

     * @return string|false

     */

    protected function getRequestHeader($Name)

    {

        $headers = self::getAllRequestHeaders();

        if (isset($headers[strtolower($Name)])) {

            return $headers[strtolower($Name)];

        }

        return false;

    }



    /**

     * Returns a new exception

     *

     * @param string $Message

     * @return Exception

     */

    protected function newException($Message)

    {

        return new Exception($Message);

    }

  

    /**

     * Encode an object into a JSON string

     * 

     * Uses PHP's jeson_encode() if available

     * 

     * @param object $Object The object to be encoded

     * @return string The JSON string

     */

    public function jsonEncode($Object, $skipObjectEncode = false)

    {

        if (!$skipObjectEncode) {

            $Object = $this->encodeObject($Object);

        }

        

        if (function_exists('json_encode')

           && $this->options['useNativeJsonEncode']!=false) {

    

            return json_encode($Object);

        } else {

            return $this->json_encode($Object);

        }

    }



    /**

     * Encodes a table by encoding each row and column with encodeObject()

     * 

     * @param array $Table The table to be encoded

     * @return array

     */  

    protected function encodeTable($Table)

    {

    

        if (!$Table) return $Table;

        

        $new_table = array();

        foreach($Table as $row) {

      

            if (is_array($row)) {

                $new_row = array();

            

                foreach($row as $item) {

                    $new_row[] = $this->encodeObject($item);

                }

            

                $new_table[] = $new_row;

            }

        }

        

        return $new_table;

    }



    /**

     * Encodes an object including members with

     * protected and private visibility

     * 

     * @param Object $Object The object to be encoded

     * @param int $Depth The current traversal depth

     * @return array All members of the object

     */

    protected function encodeObject($Object, $ObjectDepth = 1, $ArrayDepth = 1, $MaxDepth = 1)

    {

        if ($MaxDepth > $this->options['maxDepth']) {

            return '** Max Depth ('.$this->options['maxDepth'].') **';

        }



        $return = array();

    

        if (is_resource($Object)) {

    

            return '** '.(string)$Object.' **';

    

        } else    

        if (is_object($Object)) {

    

            if ($ObjectDepth > $this->options['maxObjectDepth']) {

                return '** Max Object Depth ('.$this->options['maxObjectDepth'].') **';

            }

            

            foreach ($this->objectStack as $refVal) {

                if ($refVal === $Object) {

                    return '** Recursion ('.get_class($Object).') **';

                }

            }

            array_push($this->objectStack, $Object);

                    

            $return['__className'] = $class = get_class($Object);

            $class_lower = strtolower($class);

    

            $reflectionClass = new ReflectionClass($class);  

            $properties = array();

            foreach( $reflectionClass->getProperties() as $property) {

                $properties[$property->getName()] = $property;

            }

                

            $members = (array)$Object;

    

            foreach( $properties as $plain_name => $property ) {

    

                $name = $raw_name = $plain_name;

                if ($property->isStatic()) {

                    $name = 'static:'.$name;

                }

                if ($property->isPublic()) {

                    $name = 'public:'.$name;

                } else

                if ($property->isPrivate()) {

                    $name = 'private:'.$name;

                    $raw_name = "\0".$class."\0".$raw_name;

                } else

                if ($property->isProtected()) {

                    $name = 'protected:'.$name;

                    $raw_name = "\0".'*'."\0".$raw_name;

                }

    

                if (!(isset($this->objectFilters[$class_lower])

                     && is_array($this->objectFilters[$class_lower])

                     && in_array($plain_name,$this->objectFilters[$class_lower]))) {

    

                    if (array_key_exists($raw_name,$members)

                       && !$property->isStatic()) {

                  

                        $return[$name] = $this->encodeObject($members[$raw_name], $ObjectDepth + 1, 1, $MaxDepth + 1);      

                

                    } else {

                        if (method_exists($property,'setAccessible')) {

                            $property->setAccessible(true);

                            $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1, $MaxDepth + 1);

                        } else

                        if ($property->isPublic()) {

                            $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1, $MaxDepth + 1);

                        } else {

                            $return[$name] = '** Need PHP 5.3 to get value **';

                        }

                    }

                } else {

                    $return[$name] = '** Excluded by Filter **';

                }

            }

            

            // Include all members that are not defined in the class

            // but exist in the object

            foreach( $members as $raw_name => $value ) {

    

                $name = $raw_name;

              

                if ($name{0} == "\0") {

                    $parts = explode("\0", $name);

                    $name = $parts[2];

                }

              

                $plain_name = $name;

    

                if (!isset($properties[$name])) {

                    $name = 'undeclared:'.$name;

    

                    if (!(isset($this->objectFilters[$class_lower])

                         && is_array($this->objectFilters[$class_lower])

                         && in_array($plain_name,$this->objectFilters[$class_lower]))) {

    

                        $return[$name] = $this->encodeObject($value, $ObjectDepth + 1, 1, $MaxDepth + 1);

                    } else {

                        $return[$name] = '** Excluded by Filter **';

                    }

                }

            }

            

            array_pop($this->objectStack);

            

        } elseif (is_array($Object)) {

    

            if ($ArrayDepth > $this->options['maxArrayDepth']) {

                return '** Max Array Depth ('.$this->options['maxArrayDepth'].') **';

            }

          

            foreach ($Object as $key => $val) {

              

                // Encoding the $GLOBALS PHP array causes an infinite loop

                // if the recursion is not reset here as it contains

                // a reference to itself. This is the only way I have come up

                // with to stop infinite recursion in this case.

                if ($key=='GLOBALS'

                   && is_array($val)

                   && array_key_exists('GLOBALS',$val)) {

                    $val['GLOBALS'] = '** Recursion (GLOBALS) **';

                }

              

                $return[$key] = $this->encodeObject($val, 1, $ArrayDepth + 1, $MaxDepth + 1);

            }

        } else {

            if (self::is_utf8($Object)) {

                return $Object;

            } else {

                return utf8_encode($Object);

            }

        }

        return $return;

    }



    /**

     * Returns true if $string is valid UTF-8 and false otherwise.

     *

     * @param mixed $str String to be tested

     * @return boolean

     */

    protected static function is_utf8($str)

    {

        if(function_exists('mb_detect_encoding')) {

            return (mb_detect_encoding($str) == 'UTF-8');

        }

        $c=0; $b=0;

        $bits=0;

        $len=strlen($str);

        for($i=0; $i<$len; $i++){

            $c=ord($str[$i]);

            if ($c > 128){

                if (($c >= 254)) return false;

                elseif ($c >= 252) $bits=6;

                elseif ($c >= 248) $bits=5;

                elseif ($c >= 240) $bits=4;

                elseif ($c >= 224) $bits=3;

                elseif ($c >= 192) $bits=2;

                else return false;

                if (($i+$bits) > $len) return false;

                while($bits > 1){

                    $i++;

                    $b=ord($str[$i]);

                    if ($b < 128 || $b > 191) return false;

                    $bits--;

                }

            }

        }

        return true;

    } 



    /**

     * Converts to and from JSON format.

     *

     * JSON (JavaScript Object Notation) is a lightweight data-interchange

     * format. It is easy for humans to read and write. It is easy for machines

     * to parse and generate. It is based on a subset of the JavaScript

     * Programming Language, Standard ECMA-262 3rd Edition - December 1999.

     * This feature can also be found in  Python. JSON is a text format that is

     * completely language independent but uses conventions that are familiar

     * to programmers of the C-family of languages, including C, C++, C#, Java,

     * JavaScript, Perl, TCL, and many others. These properties make JSON an

     * ideal data-interchange language.

     *

     * This package provides a simple encoder and decoder for JSON notation. It

     * is intended for use with client-side Javascript applications that make

     * use of HTTPRequest to perform server communication functions - data can

     * be encoded into JSON notation for use in a client-side javascript, or

     * decoded from incoming Javascript requests. JSON format is native to

     * Javascript, and can be directly eval()'ed with no further parsing

     * overhead

     *

     * All strings should be in ASCII or UTF-8 format!

     *

     * LICENSE: Redistribution and use in source and binary forms, with or

     * without modification, are permitted provided that the following

     * conditions are met: Redistributions of source code must retain the

     * above copyright notice, this list of conditions and the following

     * disclaimer. Redistributions in binary form must reproduce the above

     * copyright notice, this list of conditions and the following disclaimer

     * in the documentation and/or other materials provided with the

     * distribution.

     *

     * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED

     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN

     * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

     * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

     * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR

     * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE

     * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH

     * DAMAGE.

     *

     * @category

     * @package     Services_JSON

     * @author      Michal Migurski <mike-json@teczno.com>

     * @author      Matt Knapp <mdknapp[at]gmail[dot]com>

     * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>

     * @author      Christoph Dorn <christoph@christophdorn.com>

     * @copyright   2005 Michal Migurski

     * @version     CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $

     * @license     http://www.opensource.org/licenses/bsd-license.php

     * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198

     */

   

     

    /**

     * Keep a list of objects as we descend into the array so we can detect recursion.

     */

    private $json_objectStack = array();





   /**

    * convert a string from one UTF-8 char to one UTF-16 char

    *

    * Normally should be handled by mb_convert_encoding, but

    * provides a slower PHP-only method for installations

    * that lack the multibye string extension.

    *

    * @param    string  $utf8   UTF-8 character

    * @return   string  UTF-16 character

    * @access   private

    */

    private function json_utf82utf16($utf8)

    {

        // oh please oh please oh please oh please oh please

        if (function_exists('mb_convert_encoding')) {

            return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');

        }



        switch(strlen($utf8)) {

            case 1:

                // this case should never be reached, because we are in ASCII range

                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                return $utf8;



            case 2:

                // return a UTF-16 character from a 2-byte UTF-8 char

                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                return chr(0x07 & (ord($utf8{0}) >> 2))

                       . chr((0xC0 & (ord($utf8{0}) << 6))

                       | (0x3F & ord($utf8{1})));



            case 3:

                // return a UTF-16 character from a 3-byte UTF-8 char

                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                return chr((0xF0 & (ord($utf8{0}) << 4))

                       | (0x0F & (ord($utf8{1}) >> 2)))

                       . chr((0xC0 & (ord($utf8{1}) << 6))

                       | (0x7F & ord($utf8{2})));

        }



        // ignoring UTF-32 for now, sorry

        return '';

    }



   /**

    * encodes an arbitrary variable into JSON format

    *

    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.

    *                           see argument 1 to Services_JSON() above for array-parsing behavior.

    *                           if var is a strng, note that encode() always expects it

    *                           to be in ASCII or UTF-8 format!

    *

    * @return   mixed   JSON string representation of input var or an error if a problem occurs

    * @access   public

    */

    private function json_encode($var)

    {

    

        if (is_object($var)) {

            if (in_array($var,$this->json_objectStack)) {

                return '"** Recursion **"';

            }

        }

          

        switch (gettype($var)) {

            case 'boolean':

                return $var ? 'true' : 'false';



            case 'NULL':

                return 'null';



            case 'integer':

                return (int) $var;



            case 'double':

            case 'float':

                return (float) $var;



            case 'string':

                // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT

                $ascii = '';

                $strlen_var = strlen($var);



               /*

                * Iterate over every character in the string,

                * escaping with a slash or encoding to UTF-8 where necessary

                */

                for ($c = 0; $c < $strlen_var; ++$c) {



                    $ord_var_c = ord($var{$c});



                    switch (true) {

                        case $ord_var_c == 0x08:

                            $ascii .= '\b';

                            break;

                        case $ord_var_c == 0x09:

                            $ascii .= '\t';

                            break;

                        case $ord_var_c == 0x0A:

                            $ascii .= '\n';

                            break;

                        case $ord_var_c == 0x0C:

                            $ascii .= '\f';

                            break;

                        case $ord_var_c == 0x0D:

                            $ascii .= '\r';

                            break;



                        case $ord_var_c == 0x22:

                        case $ord_var_c == 0x2F:

                        case $ord_var_c == 0x5C:

                            // double quote, slash, slosh

                            $ascii .= '\\'.$var{$c};

                            break;



                        case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):

                            // characters U-00000000 - U-0000007F (same as ASCII)

                            $ascii .= $var{$c};

                            break;



                        case (($ord_var_c & 0xE0) == 0xC0):

                            // characters U-00000080 - U-000007FF, mask 110XXXXX

                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                            $char = pack('C*', $ord_var_c, ord($var{$c + 1}));

                            $c += 1;

                            $utf16 = $this->json_utf82utf16($char);

                            $ascii .= sprintf('\u%04s', bin2hex($utf16));

                            break;



                        case (($ord_var_c & 0xF0) == 0xE0):

                            // characters U-00000800 - U-0000FFFF, mask 1110XXXX

                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                            $char = pack('C*', $ord_var_c,

                                         ord($var{$c + 1}),

                                         ord($var{$c + 2}));

                            $c += 2;

                            $utf16 = $this->json_utf82utf16($char);

                            $ascii .= sprintf('\u%04s', bin2hex($utf16));

                            break;



                        case (($ord_var_c & 0xF8) == 0xF0):

                            // characters U-00010000 - U-001FFFFF, mask 11110XXX

                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                            $char = pack('C*', $ord_var_c,

                                         ord($var{$c + 1}),

                                         ord($var{$c + 2}),

                                         ord($var{$c + 3}));

                            $c += 3;

                            $utf16 = $this->json_utf82utf16($char);

                            $ascii .= sprintf('\u%04s', bin2hex($utf16));

                            break;



                        case (($ord_var_c & 0xFC) == 0xF8):

                            // characters U-00200000 - U-03FFFFFF, mask 111110XX

                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                            $char = pack('C*', $ord_var_c,

                                         ord($var{$c + 1}),

                                         ord($var{$c + 2}),

                                         ord($var{$c + 3}),

                                         ord($var{$c + 4}));

                            $c += 4;

                            $utf16 = $this->json_utf82utf16($char);

                            $ascii .= sprintf('\u%04s', bin2hex($utf16));

                            break;



                        case (($ord_var_c & 0xFE) == 0xFC):

                            // characters U-04000000 - U-7FFFFFFF, mask 1111110X

                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

                            $char = pack('C*', $ord_var_c,

                                         ord($var{$c + 1}),

                                         ord($var{$c + 2}),

                                         ord($var{$c + 3}),

                                         ord($var{$c + 4}),

                                         ord($var{$c + 5}));

                            $c += 5;

                            $utf16 = $this->json_utf82utf16($char);

                            $ascii .= sprintf('\u%04s', bin2hex($utf16));

                            break;

                    }

                }



                return '"'.$ascii.'"';



            case 'array':

                /*

                 * As per JSON spec if any array key is not an integer

                 * we must treat the the whole array as an object. We

                 * also try to catch a sparsely populated associative

                 * array with numeric keys here because some JS engines

                 * will create an array with empty indexes up to

                 * max_index which can cause memory issues and because

                 * the keys, which may be relevant, will be remapped

                 * otherwise.

                 *

                 * As per the ECMA and JSON specification an object may

                 * have any string as a property. Unfortunately due to

                 * a hole in the ECMA specification if the key is a

                 * ECMA reserved word or starts with a digit the

                 * parameter is only accessible using ECMAScript's

                 * bracket notation.

                 */



                // treat as a JSON object

                if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {

                  

                    $this->json_objectStack[] = $var;



                    $properties = array_map(array($this, 'json_name_value'),

                                            array_keys($var),

                                            array_values($var));



                    array_pop($this->json_objectStack);



                    foreach($properties as $property) {

                        if ($property instanceof Exception) {

                            return $property;

                        }

                    }



                    return '{' . join(',', $properties) . '}';

                }



                $this->json_objectStack[] = $var;



                // treat it like a regular array

                $elements = array_map(array($this, 'json_encode'), $var);



                array_pop($this->json_objectStack);



                foreach($elements as $element) {

                    if ($element instanceof Exception) {

                        return $element;

                    }

                }



                return '[' . join(',', $elements) . ']';



            case 'object':

                $vars = self::encodeObject($var);



                $this->json_objectStack[] = $var;



                $properties = array_map(array($this, 'json_name_value'),

                                        array_keys($vars),

                                        array_values($vars));



                array_pop($this->json_objectStack);

              

                foreach($properties as $property) {

                    if ($property instanceof Exception) {

                        return $property;

                    }

                }

                     

                return '{' . join(',', $properties) . '}';



            default:

                return null;

        }

    }



   /**

    * array-walking function for use in generating JSON-formatted name-value pairs

    *

    * @param    string  $name   name of key to use

    * @param    mixed   $value  reference to an array element to be encoded

    *

    * @return   string  JSON-formatted name-value pair, like '"name":value'

    * @access   private

    */

    private function json_name_value($name, $value)

    {

        // Encoding the $GLOBALS PHP array causes an infinite loop

        // if the recursion is not reset here as it contains

        // a reference to itself. This is the only way I have come up

        // with to stop infinite recursion in this case.

        if ($name=='GLOBALS'

           && is_array($value)

           && array_key_exists('GLOBALS',$value)) {

            $value['GLOBALS'] = '** Recursion **';

        }

    

        $encoded_value = $this->json_encode($value);



        if ($encoded_value instanceof Exception) {

            return $encoded_value;

        }



        return $this->json_encode(strval($name)) . ':' . $encoded_value;

    }



    /**

     * @deprecated

     */    

    public function setProcessorUrl($URL)

    {

        trigger_error("The FirePHP::setProcessorUrl() method is no longer supported", E_USER_DEPRECATED);

    }



    /**

     * @deprecated

     */

    public function setRendererUrl($URL)

    {

        trigger_error("The FirePHP::setRendererUrl() method is no longer supported", E_USER_DEPRECATED);

    }  

}

